Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:5: error: ‘ifstream’ was not declared in this scope user.cpp:5: error: expected ‘;’ before ‘read’ user.cpp:6: error: ‘ofstream’ was not declared in this scope user.cpp:6: error: expected ‘;’ before ‘out’ user.cpp:13: error: invalid operands of types ‘ssize_t(int, void*, size_t)’ and ‘int’ to binary ‘operator>>’ user.cpp:15: error: expected type-specifier before ‘deq_elem’ user.cpp:15: error: expected ‘;’ before ‘deq_elem’ user.cpp:19: error: invalid operands of types ‘ssize_t(int, void*, size_t)’ and ‘int’ to binary ‘operator>>’ user.cpp:35: error: invalid operands of types ‘ssize_t(int, const void*, size_t)’ and ‘long long int’ to binary ‘operator<<’ user.cpp:35: error: ‘endl’ was not declared in this scope